This indoor humidity monitor is compact and easy to use and read. This monitor gives time, temperature and humidity of the air in the room as well as a color indicator to let you know if the humidity is too high or too low. You can set your parameters in the app this connects to. The app is very easy to use and understand. You can even manage multiple devices in the app. This can be set almost anywhere unobtrusively, and can even be wall mounted. This is powered by 2 AAA batteries, and connects to the app on your phone by Bluetooth. This is great for monitoring indoor environment for new babies and high humidity areas for people with respiratory issues. This has come in handy for us for that exact reason here, as both myself and my sons feel the impact of the high humidity outdoors here in Florida. This is a very useful product!